Thanks people. Any combination of parent(s) out of four will do, as will any or all lovers.

The Drowned Lovers is really Nic Jones' take on Clyde's Water, and I think that the two mothers definitely deserve to end up in Auld Nick's less than tender care.

I had forgotten Famous Flower, though that too is perhaps a bit long.

Andrew Lammie? Agreed, it was the brother wot dun it, and though the whole family connive at her death, I am trying to stick to parents. (I'm saving "brothers" for an incest theme on another occasion - don't ask.)

I do like Young Edwin though and Betsy The Serving Maid. Lady Diamond too - anyone recommend any particular variant/recording?